this.userProperties = userProperties;
            this.systemProperties = systemProperties;
            this.startTime = startTime;
            this.topDirectory = topDirectory;
            this.rootDirectory = rootDirectory;
        }

        public Builder withUserProperties(@Nonnull Map<String, String> userProperties) {
            this.userProperties = new HashMap<>(userProperties);

            this.systemProperties = systemProperties;
            return this;
        }

        public ModelBuilderRequestBuilder userProperties(Map<String, String> userProperties) {
            this.userProperties = userProperties;
            return this;
        }

        public ModelBuilderRequestBuilder repositoryMerging(RepositoryMerging repositoryMerging) {

        if (userProperties == null) {
            userProperties = new Properties();
        }

        return userProperties;
    }

    @Override
    public DefaultModelBuildingRequest setUserProperties(Properties userProperties) {
        if (userProperties != null) {
            this.userProperties = new Properties();
            this.userProperties.putAll(userProperties);
        } else {

        this.cwd = requireNonNull(cwd);
        this.installationDirectory = requireNonNull(installationDirectory);
        this.userHomeDirectory = requireNonNull(userHomeDirectory);

        this.userProperties = requireNonNull(userProperties);
        this.systemProperties = requireNonNull(systemProperties);
        this.topDirectory = requireNonNull(topDirectory);
        this.rootDirectory = rootDirectory;

        return doGet(userProperties, Constants.MAVEN_MAVEN3_PERSONALITY, false);
    }

    /**
     * Check if the consumer POM feature is active.
     */
    public static boolean consumerPom(@Nullable Map<String, ?> userProperties) {
        return doGet(userProperties, Constants.MAVEN_CONSUMER_POM, !mavenMaven3Personality(userProperties));
    }

    /**

     */
    @SuppressWarnings("unchecked")
    public DefaultProfileActivationContext setUserProperties(Properties userProperties) {
        if (userProperties != null) {
            this.userProperties = Collections.unmodifiableMap((Map) userProperties);
        } else {
            this.userProperties = Collections.emptyMap();
        }

        return this;
    }

    /**

    public Properties getUserProperties() {
        if (userProperties == null) {
            userProperties = new Properties();
        }

        return userProperties;
    }

    @Override
    public DefaultSettingsBuildingRequest setUserProperties(Properties userProperties) {
        if (userProperties != null) {
            this.userProperties = new Properties();

    @Override
    public ProjectBuilderConfiguration setUserProperties(Properties userProperties) {
        this.userProperties = userProperties;
        return this;
    }

    @Override
    public Properties getUserProperties() {
        if (userProperties == null) {
            userProperties = new Properties();
        }

        return userProperties;
    }

    @Override
    public Properties getExecutionProperties() {

     * @return The user properties with contributions.
     */
    default Map<String, String> contribute(ProtoSession protoSession) {
        HashMap<String, String> userProperties = new HashMap<>(protoSession.getUserProperties());
        contribute(userProperties);
        return userProperties;
    }

    }

    public Properties getUserProperties() {
        return userProperties;
    }

    public Properties getSystemProperties() {
        return systemProperties;
    }

    public MavenExecutionRequest getRequest() {
        return request;
    }

    public void setUserProperties(Properties properties) {
        this.userProperties.putAll(properties);
    }

    public Path getRootDirectory() {